隧道爆破振动信号的混沌特征分析

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摘要基于混沌理论，将邻近隧道爆破、上跨坑道爆破作用下既有隧道振动响应时间序列进行相空间重构，通过吸引子、Lyapunov指数、关联维数等核心参量计算，分析隧道爆破振动响应信号混沌特征。经过计算，邻近隧道爆破作用下既有隧道振动响应信号相空间重构后具有奇怪吸引子，且Lyapunov指数均大于0，可判定其具有混沌特征；上跨坑道爆破作用下既有隧道振动响应信号的Lyapunov指数也均大于0，表明其也具有混沌特征。研究表明，隧道爆破振动信号具有混沌特征，随着钻爆作业面与既有隧道爆心距减小，值变大，隧道爆破振动响应的混沌特征增强，应更加强钻爆参数的合理优化和爆破振动实时监测，确保施工质量和爆破安全。

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	谢全民1
	2
	贾永胜1
	2
	丁凯3
	张杰4
	凌正东4
	刘鼎盛5

关键词 ：隧道爆破, 爆破振动, 混沌, 相空间重构

Abstract：Based on the chaos theory, the phase space reconstruction of the vibration response time series of the existing tunnel under the action of the blasting of the adjacent tunnel and the blasting of the upper span tunnel was carried out by using the attractor and Lyapunov The core parameters, such as index and correlation dimension, were calculated to analyze the chaotic characteristics of tunnel blasting vibration response signal. After calculation, the phase space reconstruction of the vibration response signal of the existing tunnel under the blasting action of the adjacent tunnel has strange attractor, and the Lyapunov index is greater than 0. It can be judged that it has chaotic characteristics. The Lyapunov index of the vibration response signal of the existing tunnel under the blasting action of the upper span tunnel is greater than 0. It shows that it also has chaotic characteristics. The research shows that the blasting vibration signal of the tunnel has chaotic characteristics. As the blasting distance between the drilling and blasting working face and the existing tunnel decreases, the value becomes larger, the chaotic characteristic of the tunnel blasting vibration response increases, and the rational optimization of blasting parameters and blasting should be strengthened. Vibration real-time monitoring to ensure construction quality and blasting safety.

Key words： tunnel blasting blasting vibration chaos phase space reconstruction

收稿日期: 2020-05-06 出版日期: 2022-02-15

引用本文:

谢全民1,2，贾永胜1,2，丁凯3，张杰4，凌正东4，刘鼎盛5. 隧道爆破振动信号的混沌特征分析[J]. 振动与冲击, 2022, 41(3): 238-244.
XIE Quanmin1,2， JIA Yongsheng1,2， DING Kai3， ZHANG Jie4， LING Zhendong4， LIU Dingshen5. Chaotic characteristics analysis of tunnel blasting vibration signals. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(3): 238-244.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I3/238

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